74ABT646CMTC

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74ABT646CMTC is an octal bus transceiver and register within the ABT logic series. It features a TSSOP-24 package with TTL input and output levels. The device operates on a supply voltage ranging from 4.5 V to 5.5 V, supporting a propagation delay of 5.6 ns. It provides a low-level output current of 64 mA and a high-level output current of -32 mA. The component functions as a non-inverting circuit and supports a minimum operating temperature of -40 C up to a maximum of +85 C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal Trans and Reg functionality
• 3-State output capability
• Non-Inverting polarity

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented data transmission
• Registered memory interface buffering
• High-speed digital signal routing

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential obsolescence status. Confirm RoHS compliance details via official documentation before integration. Ensure the specific CMTC suffix matches required thermal and mechanical specifications for the target PCB layout. Validate that the TTL input/output levels align with the system's voltage domains to prevent signal integrity issues during operation.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal registered transceiver with ABT speed characteristics is required. The TSSOP-24 package suits applications needing surface-mount assembly with moderate pin density. Verify compatibility with 5V logic systems given the specified voltage range. Consider the 64 mA sink current for driving heavy capacitive loads on shared buses without external buffering components.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ABT family of BiCMOS logic ICs manufactured by Fairchild Semiconductor, now integrated into onsemi. The 74ABT646CMTC specifically serves as an octal bus transceiver with registers, designed for high-performance digital systems requiring reliable data storage and transfer across multiple lines simultaneously.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.